Door lock



Nov. 19, 1957 F. J. MocoNNELL 2,813,739

` DooR Loox Filed'dune e. 1955 2 sheets-snee*b 1 IN1. 4 6 V y 1x fINVENTOA /ZP/m//f J." /Vc CoA/fu Nov. 19, 1957 F. J. MGcoNNELL.2,813,739

DOOR LOCK Filed June e, 1955 2 sheets-sheet 2 United States Patent iDOOR LOCK Frank I. McConnell, New Britain, Conn., asisignor to TheAmerican Hardware Corporation, New Britain, Conn., a corporation ofConnecticut Application .lune 6, 1955, Serial No. 513,483

4 Claims. (Cl. 292-169) This invention relates to a door lock and moreparticularly to a door lock of the cylindrical type, and constitutes animprovement over the cylindrical door lock structure shown in my priorapplication, Serial No. 312,290, iiled September 30, 1953, and nowabandoned.

The instant invention is embodied in the dogging mechanism of acylindrical door lock which includes the basic operating unit disclosedin the co-pending application of Frank I. McConnell et al., Serial No.508,018, led May 13, 1955; and which mechanism renders the lockparticularly adapted for bedroom or bathroom doors. It will beunderstood, however, that the dogging mechanism disclosed herein canreadily be used in other types of cylindrical door locks withoutdeparting from the scope of this invention.

The primary object of this invention is to provide an inexpensivedogging mechanism which is particularly adapted for use in the operatingunit disclosed in said copending application.

A further object of the present invention is to provide a dogging barfor such a cylindrical lock having novel means thereon cooperating withmeans on the retractor of the lock for retaining the dogging bar indogging position.

A still further object of the invention is to provide such adogging barwhich is released from dogging position when the retractor is moved toits retracted position by operation of the inner door knob or by thelatch bolt as it is depressed upon engagement with the strike.

More specifically, this invention is embodied in a ilat dogging barwhich carries a spring clip that is adapted to engage a pin on theretractor of the operating unit t retain the dogging bar in doggingposition.

Additional objects and advantages of this invention will be more clearlyunderstood from the following de scription and the accompanying drawingsin which:

Fig. l is a plan view of my improved'door lock, par#l tially in centralhorizontal section, illustrating the dogging means in normal undoggingposition.

Fig. 2 is a front view thereof, partially in vertical section, furtherillustrating the construction of the dogging means.

Fig. 3 is a sectional end view of the lock with the outer rose removed.

Fig. 4 is a sectional end view of the lock taken substantially on line4-4 of Fig. 1.

Fig. 5 is a view similar to Fig. 1, but illustrating th doggingmechanism in dogging position.

Fig. 6 is an enlarged fragmentary front view illustrating a portion ofthe dogging bar and of the retractor of the lock and the spring clipwhich retains the dogging bar in dogging position. v

Fig. 7 is a fragmentary end View thereof taken on line 7--7 of Fig. 6.

Fig. 8 is a similar view taken on line 8 8 of Fig. 6. The cylindricaldoor lock disclosed herein is particularly adapted for use on bathroomand bedroom doors wherein it is usually required that means be providedfor dogging the outer knobv of the lock againstoperation 2,813,739Patented Nov. 19, 1957 rice from the outer side of the door; saiddogging means being automatically Areleased when the inner knob isrotated, or, in lthe event that the dogging means had inadvertently beenmoved to dogging position while the door is open, upon depression of theretractor by the latch bolt as it engages the strike. In such locks, itis also usually necessary to provide means whereby the dogging mechanismmay be released from the outer side of the door shouldv the person inthe room be incapable of unlocking the door due to accident or illness.

It will be noted from the accompanying drawings that, with the exceptionof slight modifications and the inclusion of the dogging mechanism, thedoor latch operating unit disclosed therein is the same as thatdisclosed in the above mentioned co-pending application Serial No. 508,-018. However, in order to permit a clear understanding of the operationof the dogging mechanism embodying the instant invention, the entiremechanism will be described herein.

The cylindrical door lock illustrated in Fig. l of the A drawingsconsists of an operating unit 5 and a latch unit 6 which are mounted ona door 7 in the conventional manner; said operating unit being receivedin a hole 8 bored through the face of the door, and the latch unit beingreceived ina hole 9 bored into the edge of the door at right angles toand intersecting the hole 8. The latch unit is attached to the operatingunit in a conventional manner whichwill be hereinafter described.

The operating unit 5 of the door lock comprises a cylindricalcup-shapedcasing 10 which houses and supv ports the operating mechanismand is provided at its inner end with an integral end wall 11 having acentrally located circular opening 12 therethrough, and at its oppositeopen end with prongs 13 which project longitudinally therefrom. The wallof the casing contains the conventional rectangular opening 10-atherethrough to the opposite edge portions of which the conventionalngers extending from the latch unit are attached in the usual manner asshown in Fig. 4. A cover plate 14 is secured to the outer open end ofthe casing 10 by the prongs 13 which project through aligned slots 15 insaid cover plate and are peened over its outer surface to thereby rmlysecure the plate against the end of the casing. The said cover plate hasa centrally disposed opening 16 therethrough which is disposed coaxiallywith respect to the opening 12 in the end wall 11.

The casing contains a U-shaped retractor guide including a transverselycurved base portion 17 from the upper and lower edges of which projectcentrally disposed parallel arms 18--18. The said retractor guide isdisposed within the casing 10 with its base 17 resting against thecylindrical wall at the rear of the casing and its arms 18-18 extendingforwardly towards the opening 10-a and lying equidistant from thelongitudinal axis of the lock; said base portion being secured betweenthe end wall 11 and the cover plate 14 in the manner clearly disclosedin said copending application Serial No. 508,018.

The free ends of said arms 18-18 are disposed in slots in a guide plate19 that extends across the casing adjacent the opening 10-a and issecured between the end wall 11 and the cover plate 14 as also clearlydisclosed i' in said co-pending application; said guide plate havingforming the -rear end of the retractor, is slidably supegal-3,739

3 ported. A reinforcing plate 24 is disposed against the rear surface ofthe plate 21 and a centrally located notch 25 extends into both platesfrom their outer edges. For the purpose of the instant invention, a pin26 is securedto thevbase of the retractor and projects perpendicularlyin Fig. 4, to secure the said plates together and the lingersV to saidplates. Said fingers extend` through and are guided in the opening inthe guide plate 19, which provides a support for the forward endV of theretractor, and also extend through the opening -a in the wall of thecasing. The outer ends of said fingers are bent inwardly, in theconventional manner, to permit engagement thereof with, the conventionalretractor bar 28 which extends from the latch unit 6. It will be notedfrom Fig. 4 that the ends of theV retractor fingers 27-27 are receivedin notches 29-29 in the retractor bar 28 so that when the latch bolt6-a, extending from the latch unit, is depressed, as by engagement withthe strike, the retractor willmove rearwardly in unison therewith. Theretractor is urged into its normal projected position by a spring 30whichis disposed between the base 17 of the retractor guide and theplate 24 of the retractor, as clearly illustrated in Figs. 1 and 4.

The retractor actuating means carried at the inner and the outer sidesof the casing of the door lockare the same as previously disclosed in myco-pending application Serial No. 312,291, filed September 30,- 1952,and now Patent No. 2,759,750, issued August 21, 1956. Said actuatingmeans include elongated tubular bushings' 31-31 which are rotatablycontainedA in the openings 12 and 1'6 in the end wall 11 and the coverplate 14. Each of said bushings is provided withl radially extendingiiangesY 32-32 and a projection 33 whicheng'age the surface adjacentthel hole in which the bushing is" mountedand prevent axial movementthereof outwardly` of the' casing. Each of said bushings also has aysegmental rollback portion 34 which extendsinto the casing and whoseopposite edges engage the' plate 21 o'fthe retracto): and limit outwardmovement thereofto its? ntirr rial-position"l under the iniiuence of thespring` 30. The bushingsV 31-31 each contain a plurality of equallyvspaced slots 35 which extend thereinto substantially to the plane' ofvthe outer surface of the member in which the bushing.v is mounted andsaid slots receive similarly' disposed lugs 36 on a retaining washer 37which sulrro'undseachl of the bushings and abuts the outer surface ofthe member in which the bushing is mounted. The lugs 36 project throughthe slots 35 and into the bore of the bushing wherein they are engagedby the end of a tubular spindle, 38 and 39, respectively, which istelescopically received in the bore of its respective bushing and issecured therein with its inner end abutting the lugs 36 by beingsoldered, spot-welded, or otherwise fastened to the bushing. The outertubular spindle 39 and its associated bushing 31 and retaining washer 37contain aligned slots' 41, 42 and 43, respectively, which are normallyaligned with a slot 44 in the cover plate 14 extending radially from theopen'- ing 16 therein. The inner spindle, retaining washer and bushingalso contain similar slots since they are the saine' parts that are usedon the outer' side' of the lock, but said slots do not cooperate in anyway with the clogging mechanism of the present invention.

The tubular spindles 38 and 39 carry iniierand outer knobs 45 and 46,respectively, each of which has a shank portion which telescopicallyreceives its respective spindle. The outer knob is permanently fastenedto the outer spindle while the inner knob is detachably secured to itsspindle by a depressible knobv catch;- Itwillt 4. be understood tha-t,when rotated, either of said knobs will rotate its respective bushing 31through the tubular spindle to which it is secured and will urge theretractor rearwardly against the spring 30 to thereby retract the latchbolt 6-a.

The cover plate 14 has a decorative rose 47 permanently secured theretoand said rose projects outwardly from said cover plate to conceal theslots 41, 42, 43 and 44, as clearly illustrated in Fig. 1.

A clamping plate 48 of conventional form is provided on the inner sideof the lock and said plate is adjustable relatively to the outer coverplate 14' to permit installation of the lock on doors of differentthicknesses. The operating unit is secured to a door by screws 49-49which extend through holes in the clamping plate 48 and are threadedinto holes in the casing 10. A rose 50, similar to the rose 47, isdetachably secured to the clamping plate 48 to prov-ide the requireddecorative trim on the inner side of the lock.

The dogging means incorporated in the above described operating. unitfor selectively clogging the outer knob against rotation comprise aone-piece clogging bar 51 which includes an outer section 51-a to theend of which is s'ccured a conventional pushbutton 52 that extendsthrough an opening 53 in the wall of the inner knob. The outer section51-a of said clogging bar is slidably supported axially of the innertubular spindle by a disk 54 which is contained within said innerspindle and is positioned by oppositely disposed ears 55-55 extendingradially inwardly from the wall thereof; said disk being retainedagainst said ears, and the dogging bar being retained in' its normalundogging or projected position illustrated in Fig. l, by means of acompression spring 56 which is disposed between said disk and the base52-a of the pushbutton.

The intermediate section of the dogging bar 51 contains a rstoffsetportion S1-b which extends from the outer section ofthe bai' and isdisposed forwardly of and substantially parallel theretoY and hasoppositely disposed wings" 57-57 extending therefrom for a purpose to behereinafter described.- The intermediate section of said portions of thebarandl over the plate 21 of the retractor' between the retractor'fingers 27-27. It will be noted from Fig. 1 that the-rear surface ofthis portion of the flogging; bar is'sp'a'ced from the surface of' theplate 21 ofthe retractor overwhich it extends, and that said portion51-c contains a longitudinal slot 59 through which the'pin 26 projects.The inner section 51-d of said bar is oliset rearwardly relatively tothe intermediate portion 51-c thereof and extends closely adjacent theplate 21 of the'retracto'r and into the outer spindle 39. An integralsupportngear 60 is bent perpendicularly from the bar and said earslidably supports the outer end ofthe doggingl bar in the inner tubularspindle. It will be understoodv that said? ear lalso-prevents lateralmovement of the inner end of the 'dogging bar. A blade 61 is secured tothe dgging' bar adjacent its inner end and projects perpendicularlytherefrom in the plane of the axis of the unit arid toward the rear ofthe casing. The blade is fastened to the dogging bar by a lug 62 whichprojects through a slot in said-bar and is peened over the edge of saidslot. The edge of said blade adjacent the retractor passes through theslot 25 therein and said blade is provided with a nger'portio'n 63 thatis disposed in alignment with the slots 41, 42, 43 and 44. The saiddogging bar is prevented from turning relatively to the operating unitby means of an extension 64 which extends from the finger 63 on theblade 61 into a slot 65 in the base portion 17 ofthe retractor guide.The blade is rigidly supported relatively to the clogging bar by alug-66 which extends into a-slot 67 -in the ear 60, asillustrated inFigs. 1 andl 3.

The dogging bar carrie'sa spring clip 68A which coop# erates with thepin 26 'for yieldingly retaining said bar in dogging position. Thisspring clip is U-shaped in formand has leg portions'68-a-68-aextendingfrom a resilient bight portion 68-b which is disposed against theforward surface of the portion 51-b of the dogging bar and against thewings 57-57. The bight portion is .disposed between a positioning lug69, which is formed on the dogging bar to properly locate the springclip thereon, and a tab 70 which is bent from the bar and over the bightportion; said tab also securing the spring clip to the bar. The' springclip is disposed centrally of the bar and its legs extend from the bightportion toward the outer side of the lock in substantially parallelrelation beyondthe sides of the dogging bar and converge behindr theportion 51-c thereof. Said legs are bent to provide oppositely disposedhumps 71-71 which lie equi-distant from the center of the dogging barand extend under the slot'59 therein outwardly of its inner end, saidhumps being normally spaced apart a distance less than the diameter ofthe pin `26 to form a restricted passage therebetween as illustrated inFig. 2. Said legs then diverge from thehump portions 71-71 and areprovided with parallel extensions 72-72 which extend beyond the pin 26and on the opposite sides thereof.

The dogging bar is urged into its projected or undogging position by thecompression spring 56, its movement to this position being limited bythe engagement of the extension 64 on the blade 61 with the end 'of theslot 65. When the dogging bar is in its undogging position, the humps71-71 on the spring clip are disposed outwardly of the pin 26 and theextensions 72-72 lie at the opposite sides of the pin and preventmovement of the spring clip out of alignment with the pin should the tab70 fail to properly hold the spring clip.

It will be understood that when in its undogging position, the doggingbar will not interfere with the normal operation of the lock. Theretractor can be retracted by rotation of the inner or the outer knob ineither direction and as said retractor moves rearwardly, the pin willmove out of the slot 59. Since the bar is located in its undoggingposition by engagement of the extension 64 with the end of the slot 65,said slot 59 in the dogging bar will always remain in alignment with thepin 26 and will receive said pin upon return of the retractor to itsnormal position.

When it is desired to dog the outer operating knob against operation, itis only necessary to depress the pushbutton. This will move the entiredogging bar 51 against the spring 56 and relatively to the pin 26 on theretractor and urge the dogging finger portion 63 on the blade 61 towardthe notches 41, 42, 43 and 44. As the humps 71--71 on the spring clip 68engage the rounded surface of the pin 26, they will ride upwardly onsaid surface and the legs of the spring will move apart, and as thehumps move past the pin, the legs of the spring will be urged together.When the outer end of the slot 59 in the dogging bar engages the pin 26,further movement ofthe dogging bar and pushbutton is prevented and thedogging bar is in dogging position as illustrated in Fig. 6. The humpsare then disposed against the inner side of the pin and in engagementwith its surface and thereby retain the dogging bar in dogging positionagainst the force of the spring 56. When in dogging position, thedogging finger 63 will be disposed in the slots 42, 43 and 44 and willthereby prevent rotation of the outer tubular bushing 31 andconsequently of the outer knob 46.

It will be understood that the inner knob is still free to rotate topermit operation of the lock from the inner side of the door and, whenthe retractor is urged rearwardly upon operation of the inner knob, thepin 26 will be car ried rearwardly therewith and out of engagement withthe humps 71-71 on the spring clip 68, which will release the doggingbar and permit the spring 56 to return said bar to its normal undoggingposition. It will also ybe understood that if the dogging bar hasbeen'inadvertentlyf moved into dogging position while the door is open,the;

of the door.

If the person in the room has locked the door 'and is unable to unlockit due to illness or accident, the dogging bar may be released byinserting a suitable tool, such as a nail or a screw-driver, indicatedat 73, through a centrally disposed hole 74 in the outer knob and intoengagement with the ear 60 on the end of the dogging bar and thenpushing said bar inwardly to force the humps 71-71 back over the pin 26and thereby permit return of-the dogging bar to undogging position topermit operation'of the outer knob for opening the door.

The latch operating unit is supplied as a pre-assembled mechanism and toinstall it in a door, having the required holes 8 and 9 bored therein,requires only the removal of the inner knob 45, the inner rose 50 andthe clamping plate 48. The latch unit is rst inserted into the hole 9and is secured therein in the normal manner. The operat ing unit is theninserted into the hole 8 from they outer side of the door with the endsof the retractor fingers in position to enter the notches in theretractor bar 28 extending from the latch unit. The operating unit ismoved through the hole until the cover plate 14 abuts the outer surfaceof the door. The inner clamping plate is then placed in position againstthe inner surface of the door and the screws 49-49 are threaded into thecasing 10 and, when tightened, securely clamp the operating unit to thedoor. The inner rose 50 is then attached to the clamping plate and theinner knob is placed on the inner spindle to complete the installation.

It will be understood from the above description that my inventionprovides an inexpensive and durable door lock having a dogging mechanismwhich i's simple in operation, economical to produce and does notrequire complicated or numerous parts for its support or operation.

l claim:

1. A door lock comprising a casing, a retractor in said casing, a latchbolt adapted to be retracted by said retractor, inner and outerindependently operable operating members for actuating said retractor, alongitudinally movable dogging bar extending through said casingadjacent a portion of said retractor, dogging means controlled by saidbar for dogging said outer operating member against operation, springmeans normally biasing said dogging means out of dogging relation withsaid outer operating member, means accessible from the inner side of thelock for moving said dogging bar into dogging position, a projection onsaid retractor, a spring clip carried by said bar and including one ormore portions adapted to resili'- ently engage said projection when saiddogging bar is moved int-o dogging position and to retain said bar indogging position against the biasing force of said spring means, andemergency access means on the outer side of said lock for permitting aninwardly directed force to be placed on said dogging bar to overcome theresilient holding force of said spring clip whereby said dogging barwill be moved out of dogging position.

2. A door lock comprising a casing, a retractor in said casing, a latchbolt adapted to be retracted by said retractor, inner and outerindependently operable operating members for actuating said retractor, alongitudinally movable dogging bar extending through said casing,dogging means controlled by said bar for dogging the outer operatingmember against operation, spring means normally biasing said doggingmeans out of dogging relation with said outer operating member, meansaccessible from the inner side of the lock for moving said dogging barinto dogging position, a 4U-shaped spring clip carried by said doggingbar and including a resilient bight portion which is tsex-nred to saidbai` and a pair vof spaced forwardly extending legs, opposed portions ofsaid legs extending into close proximity 'and providing a restrictedpassage therebetween, fand a projection on said retractor normallyaligned with said passage and adapted to be engaged by said opposedportions of the legs upon movement -of said dogging bar` into doggingposition to retain said bar in said-position against the biasing forceof said spring means, and emergency access means on the outer vsicle ofsaid lock for permitting an inwardly directed force to be placed on saidclogging bar to overcome the resilient holding force of said spring clipwhereby said dogging bar will be moved out of clogging position.

3. A door lock comprising a casing, a retractor in said casing, a latchbolt adapted to be retracted by said retractor, inner and outerindependently operable operating members for operating said retractor, aclogging bar extending through said casing adjacent a portion of saidretractor and movable longitudinally intov and out of dogging position,clogging means carried by said bar for dogging the outer operatingmember against operation, spring means normally biasing said doggingmeans out of dogging relation with said outer operating member, meansaccessible from the inner end of the lock for moving said dogging barinto dogging position, a pin projecting from said retractor through anelongated slot in said dogging b'ar, the inner end of said slot beingengageable with said pin to limit movement of said bar to cloggingposition, a U-shaped spring clip having a resilient bight portionsecured to said bar and spaced legs extending outwardly therefrom yanddisposed at opposite sides of said pins, said legs having opposed humpsthereon providing a restricted passage therebetween and being disposedadjacent the inner end of said slot, and emergency access means on theouter side of said lock for permitting an inwardly directed force to beplaced on said dogging bar to overcome `the resilient holding force ofsaid spring clip whereby said dogging bar Vwill'b'e moved out of doggingposition.

'4. Adoor lock comprising 1a casing', a retractor in said cas'rig,l alatch bolt adapted- `to be retracted by said retractor, inner and outerindependently operable operati-ng members for actuatingsaid retractor, adogging bar extending through said casing adjacent a portion of saidretractor and being longitudinally movable into and out of doggin'gposition, lsaid bar having an elongated slot therein, a pin fastened tosaid retractor and projecting through said slot, 'the inner end of saidslot being engageable with said p'in to'lprovide stop means for limitingmovement of the bar to dog'ging position, spring means normally biasingsaid clogging means out of dogging relation with said outer operatingymember, means accessible from thefinner -side of the lock for movingsaid dogged bar into dgging position, resilient retaining means carriedby said bar and engageable with said pin to retain the bar in doggingposition against the biasing force of said rspring means, said pin beingdisposed between said retaining means and the end of said slot when saidbar is in dogging position and preventing longitudinal movement thereof,and emergency access means on the outer side of vsaid-lock forpermitting' an outwardly directed force tothe placed on said cloggingbar to overcome the resilient holding force of said resilient retainingmeans whereby said clogging bar will be moved out of dogging position.

References Cited in the le of this patent UNITED STATES PATENTS`1,579,457 Schlag'e Apr. 6, 1926 2,038,907 seaijage Apr. 28, 19362,293,856 schlage Aug. 25, 1942 2,299,180 Schlge Oct. 20, 1942 2,435,238Schlge f Feb. 3, 1948 2,611,635 Cerf Sept. 23, 1952

